Add basic raymarching shader example

Community/Shaders/RaylibCsExamples.Community.Shaders.Raymarching/Program.cs

@@ -0,0 +1,86 @@
+using System.Numerics;
+using Raylib_cs;
+
+namespace RaylibCsExamples.Community.Shaders.Raymarching;
+
+public class Program
+{
+    public static int Main()
+    {
+        // Initialization
+        //--------------------------------------------------------------------------------------
+        var screenWidth = 1600;
+        var screenHeight = 900;
+
+        Raylib.SetConfigFlags(ConfigFlags.ResizableWindow);
+        Raylib.InitWindow(screenWidth, screenHeight, "raylib [shaders] example - raymarching shapes");
+        var camera = new Camera3D
+        {
+            Position = new Vector3(2.5f, 2.5f, 3.0f),
+            Target = new Vector3(0.0f, 0.0f, 0.7f),
+            Up = new Vector3(0.0f, 1.0f, 0.0f),
+            FovY = 65.0f,
+        };
+
+        var shader = Raylib.LoadShader(null, "resources/shaders/glsl330/raymarching.fs");
+
+        var viewEyeLoc = Raylib.GetShaderLocation(shader, "viewEye");
+        var viewCenterLoc = Raylib.GetShaderLocation(shader, "viewCenter");
+        var runTimeLoc = Raylib.GetShaderLocation(shader, "runTime");
+        var resolutionLoc = Raylib.GetShaderLocation(shader, "resolution");
+
+        var resolution = new Vector2(screenWidth, screenHeight);
+
+        Raylib.SetShaderValue(shader, resolutionLoc, resolution, ShaderUniformDataType.Vec2);
+
+        var runTime = 0.0f;
+        Raylib.SetTargetFPS(60);
+        Raylib.SetMousePosition(screenWidth / 2, screenHeight / 2);
+
+        while (!Raylib.WindowShouldClose())
+        {
+            if (Raylib.IsWindowResized())
+            {
+                screenWidth = Raylib.GetScreenWidth();
+                screenHeight = Raylib.GetScreenHeight();
+                resolution = new Vector2(screenWidth, screenHeight);
+
+                Raylib.SetShaderValue(shader, resolutionLoc, resolution, ShaderUniformDataType.Vec2);
+            }
+
+            Raylib.UpdateCamera(ref camera, CameraMode.Free);
+
+            runTime += Raylib.GetFrameTime();
+
+            Raylib.SetShaderValue(shader, viewEyeLoc, camera.Position, ShaderUniformDataType.Vec3);
+            Raylib.SetShaderValue(shader, viewCenterLoc, camera.Target, ShaderUniformDataType.Vec3);
+            Raylib.SetShaderValue(shader, runTimeLoc, runTime, ShaderUniformDataType.Float);
+
+            Raylib.BeginDrawing();
+            {
+                Raylib.ClearBackground(Color.RayWhite);
+
+                Raylib.BeginShaderMode(shader);
+                {
+                    Raylib.DrawRectangle(0, 0, screenWidth, screenHeight, Color.White);
+                }
+                Raylib.EndShaderMode();
+
+                Raylib.DrawText(
+                    "(c) Raymarching shader by Iñigo Quilez. MIT License.",
+                    screenWidth - 280,
+                    screenHeight - 20,
+                    10,
+                    Color.Black
+                );
+
+            }
+            Raylib.EndDrawing();
+        }
+
+        Raylib.UnloadShader(shader);
+        Raylib.CloseWindow(); // Close window and OpenGL context
+
+        return 0; // Exit the program
+    }
+}

Community/Shaders/RaylibCsExamples.Community.Shaders.Raymarching/RaylibCsExamples.Community.Shaders.Raymarching.csproj

@@ -0,0 +1,16 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Content Include="../../resources/shaders/glsl330/raymarching.fs" Link="resources/shaders/glsl330/raymarching.fs">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </Content>
+  </ItemGroup>
+
+</Project>

RaylibCsExamples.slnx

@@ -22,6 +22,7 @@
     <Project Path="Community/Shaders/RaylibCsExamples.Community.Shaders.BasicLighting/RaylibCsExamples.Community.Shaders.BasicLighting.csproj" />
     <Project Path="Community/Shaders/RaylibCsExamples.Community.Shaders.BasicPbr/RaylibCsExamples.Community.Shaders.BasicPbr.csproj" />
     <Project Path="Community/Shaders/RaylibCsExamples.Community.Shaders.CustomUniform/RaylibCsExamples.Community.Shaders.CustomUniform.csproj" />
+    <Project Path="Community/Shaders/RaylibCsExamples.Community.Shaders.Raymarching/RaylibCsExamples.Community.Shaders.Raymarching.csproj" />
   </Folder>
   <Folder Name="/Local/" />
   <Folder Name="/Local/Objects/">